Oil burner



Patented dan. 2, 1923.

RUSSELL GAMES SLAYTER, 0F LA FAYETIE, INDIANA.

OIL BURNER.

Application le'd December 6, 1921. Serial No. 520,411.

To all whom t may concern Be it known that RUssELnGAMEs SLAY- TER, acitizen of the United States, residing at La Fayette, in the county ofTippecanoe and. State of Indiana, has invented cer` tain'new and usefulImprovements in Oil Burners, of which the following is a speciiication.i

The object of this invention is to provide a newand improved type ofburner for use with fuel oil.

This and other objects of this invention will be fully illustrated inthedrawing described in the specification and pointed out in the claims atthe end thereof.

In' the accompanying drawing z' Figure 1 is a top. plan view of theburner.

Figure 2is a vertical cross section of the burner, the section beingtaken on the line 2)@-2X of Figure 1 i In the several gures of thedrawing like reference numerals indicate like parts.

The burner forming the subject matter of this invention comprises thehollow base 1 which is made up of the tray 2 having a central opening inthe bottom thereof. Placed on top of the tray 2 is the cover or burnerplate 3 which is provided with the annular groove 4 into which the'vertical flange of the tray 2 is'adapted to project to hold the coverplate in place thereon.

The ,top of the cover has a cone shaped elevation 5' formed in thecenter thereof through which the vertical duct 6 passes. The fuelsupplypipe 7 terminates into the duct 6 and the fuel oil passes into this ductand :out of it at the top of the cone shaped elevation. The oil flowsdown the sides of thecone shaped elevation into the shallow bowl Vformedat the top of the cover surrounding the cone shaped elevation.

Leading out from the cover of the hollow baseanear the outside thereofare the four openings 8, 9, 10 and 11. An equal number of ducts 12, 13,14 and 15 extend upwardly from-each ofthe openings in the coverandcurvel toward a common center above the cone'v shaped elevation 5 of thecover. At this point each of the four ducts lead into the spiral ducts16, 17, 18 and 19 which are formed in the downwardly projecting throatprovided at the end of the series of four ducts 12,13, 14 and 15. Eachof the spiral ducts makes a quarter turn beginning at the end of each ofthe curved ducts and ending at the end of the downwardly projectingthroat of the manifold formed by the ducts' and the throat. i

As heretofore pointed out the fuel oil passes through the .fuel supplypipe 7 and flows out of the top of the duct 6, the

amount of flow being regulated by a suitable needle valve (not shown)located at any convenient point in the fuel feedline. As it emerges fromthe duct 6 the oil flows down the sides of the cone 5 into the bowlformed by they burner plate in which the oil is ignited. The burning ofthe oil operates to heat the four ducts located above the burner plateand causes the air passing therethrough to be heated.

The air passing through the ducts of the manifold is drawn from thehollow base 1 into which it enters through the central opening 20surrounding the fuel feed pipe 7. From the base 1 the air passes throughthe openings 8, 9, 10 and 11 into the ducts 12, 13, 14 and 15respectively which are heated as heretofore pointed out. The air isheated in passing through the ducts 12,

13, 14 and 15, then enters vertical ducts' where it is given a whirlingmotion in passing therethrough. The heated air is then delivered at theend of the throat formed by the spiral ducts 16, 17, 18 and 19 and comesin contact with the cone shaped elevation and the oil flowing down onthe sides thereof while still in this twirling motion. A very thoroughmixing effect is thus secured between the fuel oil and the heated air sothat a complete combustion of the oil is secured Without more thantwenty percent excess air corresponding to a G02 content in flue gasesof not less than fourteen percent.

1 claim:

1. 1n an oil burner, theA combination of a outer ends thereof,saidseries of ducts curving toward a common center and said spiralextensions projecting downwardly from the common center of saidl ducts.

2. 1n an oil burner, "the combination of a hollow base having an airinlet at the `bottom, a series of air ducts leading out of the top ofsaid hollow base, said series of ducts being provided with spiralextensions at the outer ends thereof, said series of ducts curvingtoward a common center and sald spiral extenslons projecting downwardlyfrom the common center of lsaid ducts, a bowl formed at the top of saidhollow base, a conical ele- `vation i the center of said bowl forming anozzle therein and an oil feed vpipe leading into said conical nozzleformed at the top of said hollow base.

3. In an oil burner, the combination of a hollow base having an airinlet at the bottom, a series of air ducts leading out of the top ofsaid hollow base, said series of ducts beingprovided with spiralextensions at the outer ends thereof, said series of ducts curvingtoward a common center and said spiral extensions projectin downwardlyfrom the common center of sald ducts, a bowl formed at the top of saidhollow base, a conical ele- -vation in the center of said bowl forming anozzle therein and-an oil feed pipe leading into said conical nozzleformed at the top of said hollow base, said tangential extensions ofsaid ducts being located over *be conical sides of said nozzle.

In testimony whereof I aliix my signature.

RUSSELL GAMES SLAYTER.-

